I enjoyed Phat Guidos tumblr blog a lot. But he actually produces most of the content himself. Everyone else just takes it from news, websites, or creative people. Most Tumblr blogs are just high school kids that reblog cool stuff but without any real message or meaning. I got bored and closed my Tumblr blog.

I agree. Some of the reblogs are done well, most don't mean anything. When I started mine, I told myself I won't reblog anything. Just my stuff. And in my forty or so posts, only one reblog. However, sometimes I see something funny and its tempting to reblog it.